package com.wolf.gulimall.seckill.scheduled;

import com.wolf.gulimall.seckill.service.SeckillService;
import lombok.extern.slf4j.Slf4j;
import org.redisson.api.RLock;
import org.redisson.api.RedissonClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;

import java.util.concurrent.TimeUnit;

/**
 * 定时上架秒杀商品
 */
@Slf4j
@Service
public class SeckillSkuScheduled {
    @Autowired
    private SeckillService seckillService;
    @Autowired
    private RedissonClient redissonClient;

    private final String upload_lock = "seckill:upload:lock";

    /**
     * 每天晚上三点上架最近三天需要秒杀的商品
     * 接口要进行幂等性处理,防止同一件商品重复上架问题
     */
    @Scheduled(cron = "0 * * * * ?")
    public void uploadSeckillSkuLatest3Days() {
        //1.重复上架无需处理
        log.info("定时上架秒杀商品!!");
        //分布式锁
        RLock lock = redissonClient.getLock(upload_lock);
        lock.lock(10, TimeUnit.SECONDS); // 加锁
        try {
            seckillService.uploadSeckillSkuLatest3DaySession();
        }finally {
            lock.unlock();//解锁
        }


    }
}
